Danfoss AB-QM 4.0, AB-QM Data sheet

Data sheet

AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV) DN 15-250

The AB QM valve equipped with an actuator is a control valve with full authority and an automatic balancing function / flow limitation. Typical applications are: Temperature control with permanent automatic balancing on terminal units (chillers, air-handling units, fan coils, induction units, radiation panels and heat exchangers). Without an actuator is a flow limiter e.g for one-pipe systems.

Description	The Danfoss AB-QM is a Pressure Independent
	Control Valve (PICV) that combines high
	accuracy and durability with market leading
	user-friendliness. The design of the AB-QM is
	fully geared towards making your project run on
	time and on budget while delivering the most
	efficient HVAC system.
	Pressure independent valves are control valves
	with an automatic balancing function. An
	in-built pressure controller keeps a constant
	differential pressure over the control valve,
	ensuring full authority and automatic flow
	limitation. By combining two functions in one,
	control and automatic hydronic balance, Danfoss
	PICVs provide a cost-efficient solution for the
	challenges faced by forward-looking designers
	of HVAC systems.

The Danfoss AB-QM delivers the lowest total cost of ownership because:

•Precise flow limitation ensures always the right flow at the right time, ensuring minimized pumping energy

•Full range from DN15 to DN250 for flows up to 407 m3/h

•Available with internal and external thread for universal applicability

•Danfoss’ durability test ensures the AB-QM has best-in-class resistance to scaling and clogging

•Easy troubleshooting because of the always visible setting and the ability to measure flow through test plugs

•Minimum hysteresis for stable and precise temperature control

•Future-ready with a range of smart actuators, ready for data driven and optimized HVAC 4.0

© Danfoss | 2022.03

AI309581732428en-030402 | 1

Data sheet	AB-QM DN 15-250
Ordering	AB QM 4.0 threaded version (with test plugs and without test plugs) - External thread
			Type		With test	Without test
					plugs	plugs
	Picture	DN	Qnom.	Ext. thread	Code No.	Code No.
			(l/h)	(ISO 228/1)
		15 LF	200		003Z8200	003Z8220
		15	650	G ¾A	003Z8201	003Z8221
		15 HF	1,200		003Z8202	003Z8222
		20	1,100	G 1A	003Z8203	003Z8223
		20 HF	1,900		003Z8204	003Z8224

AB QM threaded version (with test plugs and without test plugs) - External thread

			Type		With test	Without test
					plugs	plugs
	Picture	DN	Qnom.	Ext. thread	Code No.	Code No.
			(l/h)	(ISO 228/1)
		25	1,700	G 1 ¼A	003Z1214	003Z1204
		25HF	2,700		-	003Z1224
		32	3,200	G 1 ½A	003Z1215	003Z1205
		32 HF	4,000		-	003Z1225
		40	7,500	G 2 A	003Z0770	*
		50	12,500	G 2 ½ A	003Z0771
				-

* AB-QM DN 15-32 w/o TP can not be upgraded to version with TP

AB QM 4.0 threaded version (with test plugs and without test plugs) - Internal thread

			Type		With test	Without test
					plugs	plugs
	Picture	DN	Qnom.	Int. thread	Code No.	Code No.
			(l/h)	(ISO 7/1)
		15 LF	200		003Z8300	003Z8320
		15	650	Rp ½	003Z8301	003Z8321
		15 HF	1,200		003Z8302	003Z8322
		20	1,100	Rp ¾	003Z8303	003Z8323
		20 HF	1,900		003Z8304	003Z8324

AB QM flanged version

			Qnom.	Flange
	Picture	DN		connection	Code No.
			(l/h)
				(EN 1092-1)
		50	12,500		003Z0772
		65	20,000		003Z0773
		65 HF	25,000		003Z0793
		80	28,000		003Z0774
		80 HF	40,000		003Z0794
		100	38,000		003Z0775
		100 HF	59,000		003Z0795
		125	90,000	PN 16	003Z0705
		125 HF	110,000		003Z0715
		150	145,000		003Z0706
		150 HF	190,000		003Z0716
		200	200,000		003Z0707
		200 HF	270,000		003Z0717
		250	300,000		003Z0708
		250 HF	370,000		003Z0718

2 | AI309581732428en-030402

© Danfoss | 2022.03

Data sheet	AB-QM DN 15-250

Ordering (continuous)

Accessories & spare parts

	Type		Comments	Code No.
		To pipe	To valve
	Union connection	R 1/2	DN 15	003Z0232
	(CW617N)	R 3/4	DN 20	003Z0233
	(1 pcs.)	R 1	DN 25	003Z0234
		R 1 1/4	DN 32	003Z0235
		R 11/2	DN 40	003Z0279
		R 2	DN 50	003Z0278
	Tailpiece welding		DN 15	003Z0226
	(W. Nr. 1.0308)		DN 20	003Z0227
	(1 pcs.)		DN 25	003Z0228
		Weld.
			DN 32	003Z0229
			DN 40	003Z0270
			DN 50	003Z0276
			DN 15	003Z1271
			DN 20	003Z1272
		Weld.	DN 25	003Z1273
			DN 32	003Z1274
			DN 40	003Z1275
			DN 50	003Z1276
	Tailpieces for soldering			065Z7017
	(CW614N)	15×1 mm	DN 15
	(2 nuts, 2 gaskets, 2 soldering plugs
	Handle AB QM		DN 40-100	003Z0695
			DN 125-150	003Z0696
	(necessary accessory if installing valve without actuator)
			DN 200-250	003Z0697
	Shut off accessories		DN15-32	003Z0230
	Stem heater for AB QM DN 40-100 / AME 435 QM			065Z0315
	Stem heater for AB QM DN 125, 150 / AME 55 QM / AME 655			065Z7022
	Elbow test plug extension (1 pcs.)			003Z3944
	Straight test plug extension (1 pcs.)			003Z3945
	Straight plug extension set (1 pcs.)			003Z3946
	AB-QM 4.0 DN15 EPP insulation			003Z7810
	AB-QM 4.0 DN20 EPP insulation			003Z7811

© Danfoss | 2022.03

AI309581732428en-030402 | 3

Data sheet

AB-QM DN 15-250

Technical data

AB QM 4.0 (threaded version)

AB QM (threaded version)

Nominal diameter

DN

15 LF

15

15 HF

20

20 HF

25

25 HF

32

32 HF

40

50

Flow range

Qnom

(100 %)1)

l/h

200

650

1.200

1.100

1.900

1.700

2.700

3.200

4.000

7.500

12.500

Qhigh3)

200

650

1.200

1.100

1.900

1.870

2.970

3.520

4.400

7.500

12.500

Setting range 1), 2)

%

10-100

20-110

40-100

Diff. pressure

∆pmin

kPa

16

16

25

16

25

20 (25)

35 (40)

25 (30)

35 (40)

30

3), 4)

∆pmax

600

Pressure stage

PN

25

16

Control range

1:1000

Control valve’s characteristic

Linear (could be converted by actuator to equal percentage)

Leakage rate with recommended

IEC 60534-4:2007 class IV

IEC 60534-4:2007 class III

actuators

For shut off function

Acc. to ISO 5208 class A - no visible leakage

Flow medium

Water and water mixture for closed heating and cooling systems according to plant type I for DIN WN 14868. When used in Plant

type II for DIN EN 14868 appropriate protective measures are taken. The requirements of VDI 2035, part 1+2 are observed

Medium temperature

°C

-10 … +95

(-10*) + 2 … 120

Storage and transport temp.

-40 … +70

Stroke

mm

4

4.5

10

ext. thread (ISO 228/1)

G ¾ A

G 1 A

G 1¼ A

G 1½ A

G 2 A

G 2 ½ A

Connection

int. thread (ISO 7/1)

Rp ½

Rp ½

Rp ½

Rp ¾

Rp ¾

-

actuator

M30 x 1.5

Danfoss standard

Materials and medium

Valve bodies

DZR Brass

Grey iron EN-GJL-250

(GG25)

Membranes and O-rings

EPDM

Shutter guide

PPSU

N/A

Shutter

DZR Brass

-

Materials in

Springs

W.Nr.1.4310

W.Nr.1.4310, W.Nr. 1.4568

the medium

Spring support

PPSU

-

Cone (Pc)

-

W.Nr. 1.4305

CW 614N, W.Nr.1.4305

Cone (Cv)

PPSU

CW 614N

Seat (Pc)

-

EPDM

W.Nr. 1.4305

Seat (Cv)

DZR Brass

W.Nr. 1.4305

Screw

-

Stainless steel A2

Materials out

Plastic parts

ABS

PA

POM

Insert parts and outer

of medium

-

CW 614N, W.Nr. 1.4310, W.Nr. 1.4401

screws

1)Factory setting of the valve is done at nominal setting range.

2)Regardless of the setting, the valve can modulate below 1 % of set flow.

3)When set above 100 %, minimum starting pressure needed is higher, see figures in the ().

4)At min differential pressure valve reaches at least 90% of nominal flow. Declaration of performance is available upon request.

*) If the medium temperature when using AB-QM DN 15-32 is below 2 °C, than ice forming on the spindle must be prevented, there fore valve and actuator should be insulated. For AB-QM DN40-100 stem heaters must be used: Code 065B2171, 065Z0315 or 065Z7022.

According suitability and usage especially in not oxygen tight systems please mind the instructions given by the coolant producer.

Pc - pressure controller part

Cv - Control valve part

4 | AI309581732428en-030402

© Danfoss | 2022.03